[Antennas] Re: Cushcraft R-7000!

[John Tait]

Hi Ron..
Subject: [Antennas] Re: Cushcraft R-7000!


> Hello All, that replied and were so helpful and thoughtful regarding my
> Cushcraft R-7000 high SWR problem.
>
> I finally found the problem thanks to your help. You all were correct in
one
> way or another. All of you either mentioned a shorted coax, or defective
> match box, or some such problem. Well guess what, I finally got a chance
to
> open the match box today, and lo and behold the two capacitors that are
> inside at one corner, one is badly burned and blown open, which I assume
> is/are the culprits. So pat yourselves on the back, you all deserve an
> "atta-boy" !!
>
> Now, does any one know what the values they are, and where to obtain them?

  They are a pair of 86pF high voltage disc ceramics..  The two are in
series, so the true
value is actually about 50pF in total. If possible, replace them with a
SINGLE high quality
capacitor, capable of carrying CURRENT.!! like a "doorknob " type..

> Cushcraft, if you are reading this, perhaps you can tell me what part
> numbers they are and price and availability.

 Because of the complaints that I'm continually about bad service, I'm
adding
a little treatise on R5 / R7 maintenance & repair, to my site at
http://www.iol.ie/~bravo/
It should be up in a day or two.. or try a sneak preview at
http://www.iol.ie/~bravo/r7_vertical.htm


73
  John EI7BA